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Sean keeps Sierra well oiled machine, managing the company's day-to-day operations, office systems, and all aspects of production -- i.e., roof replacements, inspections, and repairs.

A Bay Area native, Sean began his career in the roofing business as a teenager. Sean has over 25 years of experience as a roofer, foreman, superintendent, roof replacement and roof repair estimator, as well as GM. His specialties include: slate, tile, shake, composition shingle, hot tar, and single ply.

Sean O’Brien

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Contact Information

Location (Dublin)

6955 Sierra Ct., Ste. 102, Dublin, CA 94568

Telephone (Dublin)

+1 (925) 828-0700

Location (Oakland)

920 Wawona Ave, Oakland, CA 94610

Telephone (Oakland)

+1 (510) 889-0100


Mon-Fri: 7:00am-5:00pm

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